Why do I have heart palpitations after eating?

Why do I have heart palpitations after eating?

If you've ever felt your heart racing or pounding after a meal, you're not alone. This sensation is known as heart palpitations, and while it can be alarming, typically it’s not a threat to your health. This common condition is often linked to what we eat. Whether it’s a special occasion like a holiday feast, or a quick snack, the foods we choose can have a significant impact on our heart's response.

In this article, Northwell Health explores the common causes of heart palpitations after eating and shares tips on how to manage them.

What are heart palpitations?

In medical terms, heart palpitations are when the heart speeds up or stalls briefly, leaving you with the sure sense that something’s wrong. You may feel like your heart is fluttering, racing, pounding or skipping a beat. You can feel palpitations in the chest, throat or neck.

Heart palpitations can occur at any age, but they are more common in middle-aged and older adults. Women are generally more likely than men to report experiencing heart palpitations, often due to hormonal fluctuations during menstruation, pregnancy and menopause — the physiological changes that occur during these events all affect the cardiovascular system.

The frequency and intensity of palpitations vary widely and are influenced by a variety of factors, from age and gender to lifestyle, food choices and even underlying conditions.

Why does my heart race after I eat?

There are several reasons you may feel heart palpitations after eating.

Blood flow changes: When you eat, your body redirects blood flow to the digestive system to help process the food. This increased demand for blood can elevate your heart rate, leading to the sensation of palpitations.

Increased blood pressure: Eating can temporarily raise your blood pressure. This is because the stomach requires extra blood flow to digest the food you eat — and the larger your meals, the more blood it needs. The effort to direct blood to the stomach can cause stress on the heart and is the reason it may beat faster and, in some cases, lead to palpitations.

Food choices: Certain foods are more likely to cause heart palpitations after eating. Foods containing the following could contribute to this problem:

• Processed sugars and high carbohydrates: In addition to causing weight gain and other health issues, foods in these categories can cause heart palpitations in people with low blood sugar. Foods and drinks in this category include candy, soda and sweet pastries.
• High sodium: Consuming too much sodium increases your blood volume, requiring greater effort from your heart to pump. High-sodium foods include canned soup and cured meats.
• High-saturated fat: Saturated fat increases your cholesterol, which collects in the arteries. When that happens, your heart struggles to pump blood through the body — a problem that gets worse as arteries narrow due to this buildup. The added stress on the heart can cause palpitations. Whole milk and red meat are among the foods high in saturated fat.
• Capsaicin: Spicy foods contain something called capsaicin, a chemical responsible for the “burning” sensation that comes with certain foods. This can increase your heart rate and trigger palpitations. Chili peppers, mustard and wasabi sauce are all high in capsaicin.
• Caffeinated foods and drinks: Like capsaicin, caffeine increases your heart rate. Foods and drinks rich in caffeine include coffee, chocolate and black tea.

Underlying health conditions: Certain medical conditions can also increase the likelihood of experiencing heart palpitations, including:

• Anxiety or stress: Stress can activate the body's fight-or-flight response, leading to increased heart rates and palpitations.
• Thyroid disorders: Hyperthyroidism, or an overactive thyroid, can lead to an increased heart rate and palpitations.
• Heart conditions: Individuals with arrhythmias, heart disease, or a history of heart attacks may be more prone to palpitations.
• Respiratory issues: Conditions like asthma or chronic obstructive pulmonary disease (COPD) can also contribute to palpitations, particularly during episodes of shortness of breath.

Other reasons for heart palpitations after eating include:

Low water intake: When there isn’t enough water in your system, pumping blood becomes more difficult for your heart, which compensates by beating faster and more intensely.

Alcohol: Even moderate levels of alcohol consumption can damage heart cells, leading to heart palpitations, according to the American College of Cardiology. Binge drinking can lead to “holiday heart syndrome” — a significant interruption in your heartbeat that can lead to hospitalization if drinking persists over several days. Binge drinking is defined as more than five drinks in two hours for men or more than four drinks in two hours for women.

Allergies: Many people live with food allergies and food sensitivity. Some react poorly to milk products; others can’t tolerate nuts, shellfish or certain fruits. This is because the immune system mistakenly identifies them as a threat, prompting an allergic reaction.

As white blood cells rush to defend the body during this miscommunication, they release chemicals that are responsible for many of the symptoms associated with allergic reactions.

In addition to hives, rashes and swelling, allergic reactions can also cause increased heart rate, palpitations, or a feeling of the heart racing. Heart palpitations in combination with other allergy symptoms, especially difficulty breathing or swelling, may be a sign of a severe allergic reaction called anaphylaxis. Seek treatment immediately. If you think you have a food allergy, talk to your doctor.

Heart palpitations after eating and lying down

Many people like to lie down when they’re full after a big meal. Eating and lying down each cause a slight, temporary decrease in blood pressure. The drop they cause can be stark enough to trigger heart palpitations.

How to prevent heart palpitations after eating

If you’re plagued by unpleasant heart palpitations, try these steps to calm your heart.

• Moderate your intake of foods and drinks that trigger heart palpitations after eating
• Practice stress-reduction strategies: If you’re already prone to palpitations due to stress, eating can trigger them more easily. Guided breathing, meditation and yoga can lower your stress levels and the likelihood you’ll have palpitations.
• Exercise: A study published in the journal PLOS ONE found a link between regular exercise and a reduction in the frequency of palpitations
• Delay resting or lying down after eating: In addition to the blood pressure changes that come with lying down, eating at night is associated with an increased risk of heart disease. Instead, taking even a short walk after eating, according to a study published in Sports Medicine, may lower your risk of cardiovascular disease.

Are palpitations dangerous?

Palpitations may feel uncomfortable, but if they occur infrequently and end quickly, they’re usually not cause for alarm — especially when triggered by eating. But if your symptoms last weeks at a time, consider talking to a doctor.

Palpitations occurring with any of the following symptoms warrant immediate medical attention, no matter their cause:

• Faintness
• Shortness of breath
• Confusion
• Dizziness
• Continuation beyond two to three minutes

A pounding heart in tandem with any of these symptoms could be a sign of a heart arrhythmia, heart attack, or other significant medical conditions. For these individuals, palpitations may signal an exacerbation of their underlying condition. Your doctor may order a cardiac CT scan, a cardiac MRI or other heart tests to determine the problem.

If the pattern of palpitations changes (for example, becoming more frequent, more intense, or occurring after minimal exertion), consult your doctor.

This story was produced by Northwell Health and reviewed and distributed by Stacker.